Bump icalendar from 2.10.3 to 2.11.2

Bumps [icalendar](https://github.com/icalendar/icalendar) from 2.10.3 to 2.11.2.
- [Changelog](https://github.com/icalendar/icalendar/blob/main/CHANGELOG.md)
- [Commits](icalendar/icalendar@v2.10.3...v2.11.2)

---
updated-dependencies:
- dependency-name: icalendar
  dependency-version: 2.11.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -167,8 +167,10 @@ GEM
     hashdiff (1.2.0)
     i18n (1.14.7)
       concurrent-ruby (~> 1.0)
-    icalendar (2.10.3)
+    icalendar (2.11.2)
+      base64
       ice_cube (~> 0.16)
+      logger
       ostruct
     ice_cube (0.17.0)
     image_processing (1.14.0)
@@ -240,7 +242,7 @@ GEM
       capybara (>= 1.1)
       rspec (>= 2.14)
     orm_adapter (0.5.0)
-    ostruct (0.6.1)
+    ostruct (0.6.2)
     pg (1.5.9)
     popper_js (2.11.8)
     pp (0.6.2)